EDINA will be exhibiting at the Jisc Digifest 2018 conference on 6th and 7th March at the ICC in Birmingham. Come and talk to us about exciting developments with Digimap! We will have demonstrations of all the Digimap services and staff on hand to answer any questions. We will be at Pod 19 in the Exhibitor Zone and DigiLab area.

We recently made available, through the Digimap Lidar Collection, a wealth of Vertical Aerial Imagery data captured by the Environment Agency for England. The Environment Agency has been capturing vertical aerial imagery since 2006 on a project by project basis, so the coverage is not continuous across England. Availability grids for each year of data are available in the Lidar Download application. Data is available in some locations for multiple dates where the location has been surveyed on more than one occasion.

Some of the imagery was captured at night time giving an insight in to the effects of urban light pollution.

Data format

The data is supplied in the raster ECW (enhance compressed wavelet) format, which should be readable by most modern GIS and image processing software. The data is tiled and tile sizes range from 1km x 1km to 5km x 5km and the resolution of the data ranges from 10cm to 50cm. There are three types of imagery available:

True colour – red, green, blue (RGB)

Near Infra-Red (NIR)

4-band (RGBN)

RGBN aerial imagery of Spurn Head in Humberside

Access

Lidar download is available to all institutions that subscribe to Aerial Digimap, meaning that subscribing institutions now have access to another detailed aerial imagery dataset.

We are pleased to announce a new webinar series for Digimap over the coming months. These short sessions are free to attend and are available to any Digimap user, whether staff, student or researcher. You will need to register to attend each webinar. Bookings will open a couple of weeks before each webinar is scheduled. The majority of the webinars will be recorded and made available via our Digimap YouTube channel for those who were unable to attend.

May was one of the busiest in terms of dataset updates in the history of Digimap. Around 20 separate datasets have been updated bringing them bang up to date with the most recent data available from the data suppliers. All the updates are listed in the tables below, broken down by the Collection and service that they can be found in.

Withdrawn Datasets (OS Collection):

OS Download Withdrawn Datasets [click to expand]

Along with the updated data, Ordnance Survey have recently withdrawn three datasets:

These withdrawn datasets are still available to download through the Ordnance Survey Data Download application in Digimap, but users should be aware that they are no longer updated by Ordnance Survey. Withdrawn datasets have their own separate category in the Select Data panel in OS Data Download, as shown by the image on the left hand side.

OS Roam:

Product Name

OS Publication Date

1:50,000 Colour Raster

March 2017

OS Open Map – Local (vector)

April 2017

VectorMap Local (vector)

April 2017

VectorMap District (vector)

March 2017

VectorMap Local Raster

April 2017

VectorMap District Raster

March 2017

OS Download:

Product Name

OS Publication Date

VectorMap Local Raster

April 2017

VectorMap District Raster

March 2017

VectorMap District (vector)

March 2017

OS Open Roads

October 2016 and April 2017

OS Open Map – Local (raster)

April 2017

OS Open Map – Local (vector)

April 2017

OS Terrain 5 DTM

April 2017

OS Terrain 5 Contours

April 2017

OS Open Names

April 2017

VectorMap Local (vector)

April 2017

Code-Point with Polygons

April 2017

OS Open Rivers

April 2017

Geology Download:

Product Name

BGS Publication Date

Borehole index

April 2017

The datset update pages are kept up to date with all dataset updates in the collections:

Canworthy Solar Farm, which became operational in 2014 and covers approximately 55 hectares (~67 football fields)

Aerial Digimap updates

March/April 2017 has been a busy couple of months for the Data Team who have been working hard to process a huge area of updated aerial imagery data from the data supplier, Getmapping. The update consists of around 80,000 individual 1km tiles, all captured in 2015, which is approximately 30% of the country.

Prior to the update just over 50% of the data was from 2013 or later; after the update 77% of the data is from 2013 or later.

This means that more up to date imagery is now available for viewing and download through Aerial Digimap for a significant proportion of the country.

The map below shows the approximate distribution of the updated data.

Click on map to view larger version

This is the first update we have received from Getmapping, but we are expecting another update later this year containing imagery captured in 2016.

Cruise liner in the Firth of Forth

We will add this to the service as quickly as we can to ensure that the most up to date data is always available to Aerial Digimap users. In order to make it clear where the data has been updated, we will add an Availability/Reference Grid to Aerial Download so that users can easily identify if the imagery has been updated in their study area(s). This grid will be added to the system in the next couple of weeks.

We are still investigating the best way to make previous versions of the data available, but in the mean time only the most recent data is available through Aerial Roam and Aerial Download.

Webinar resources

We recently ran a webinar highlighting the data and showcasing a number of potential uses for the imagery. The webinar was recorded in full and is available on our YouTube channel. The slides used during the webinar and a transcript of all questions and answers are available on our help page.

Data information

The aerial imagery data in the service is 25cm resolution vertical aerial orthophotography supplied by Getmapping PLC, and is the most detailed aerial imagery available for the whole of Great Britain. As well as being a really interesting dataset the imagery also has a number of practical uses across a wide range of disciplines from urban planning and 3D modelling to land use and archaeological studies.

We have updated a number of key datasets in Jan/Feb 2017 in the Ordnance Survey collection of Digimap. These updates bring the datasets available from Digimap inline with the latest versions published by Ordnance Survey. Of particular note are the updates to the two most detailed mapping products available from Ordnance Survey: OS MasterMap Topography Layer and OS VectorMap Local.

OS VectorMap Local showing Westminster

OS MasterMap Topography Layer showing Westminster

OS Data Download:

Product Name

OS Publication Date

Integrated Transport Network (ITN) Layer

December 2016

OS MasterMap Topography Layer

December 2016

OS MasterMap Water Network Layer

January 2017

OS VectorMap Local

January 2017

OS VectorMap Local Raster

January 2017

MiniScale

January 2017

OS Terrain 5 Contours

January 2017

OS Terrain 5 DTM

January 2017

OS Open Names

January 2017

Code-Point with polygons

January 2017

Code-Point Open

February 2017

OS Roam:

Product Name

OS Publication Date

OS MasterMap Topography Layer

December 2016

OS VectorMap Local

Jan 2017

OS VectorMap Local Raster

Jan 2017

MiniScale

January 2017

The OS data update page is kept up to date with all dataset updates in the collections.

If you have any questions about the dataset updates or Digimap please contact us:

Archives:

Archives:

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